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Boss Monstro.png
Base HP
Stage HP
Found In
Stage basement.png Boss Challenge Room Icon.png Super Secret Room Icon.png
Double Trouble
Stage caves.pngStage catacombs.png
Stage depths.pngStage necropolis.pngStage womb.pngStage utero.png
Stage cathedral.pngStage chest.pngStage dark room.png
Dropped Items
Boss Boss  
Disambig.png This article is about the boss. For the enemy, see Ministro. For the item, see Lil Monstro.

Monstro is one of the bosses that can appear in The Basement. He is amongst the most common to fight, particularly because he can appear on later floors as an enemy.

Behavior[edit | edit source]

  • Hops towards the player.
  • Coughs up a large amount of disorganized tears. The larger tears do one heart of damage while the short ranged small ones do 1/2 heart.
  • Jumps off-screen, aiming to land on top of the player.
    • Fires another set of disorganized tears after landing.

Notes[edit | edit source]

  • Monstro can't hop over Obstacles.
  • When Monstro jumps off-screen, he is cured of all status effects.

Champion Versions[edit | edit source]

  • Red: Two smaller Monstros, each with 45% of Monstro's normal health, replace the normal Monstro.
  • Dark Grey: Slightly larger and has 25% more health. Uses tear volleys much more often and is unable to jump off-screen.

Arena[edit | edit source]

Gallery[edit | edit source]

Trivia[edit | edit source]

  • Monstro II is the posthumous version of him, and Gish is the alternate version.
  • Monstro appeared in the original Binding of Isaac.
  • Monstro appears to be missing a tooth which happens to be an item.
  • Monstro is Monster in Portuguese.
    • "monstro" is a somewhat common mispronunciation of the Spanish word monstruo.

Bosses Boss Monstro.png
Chapter 1 Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurdy Jr.GurglingsThe HauntLarry Jr.MonstroPinStevenWidow
DLC Indicator.png DangleLittle HornRag ManTurdlings
Chapter 2 C.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusCarrion QueenThe Wretched
DLC Indicator.png The ForsakenThe FrailThe Stain
Afterbirth† Indicator.png Big HornRag Mega
Chapter 3 The AdversaryThe BloatThe CageCarrion QueenThe GateGishLokiMask of InfamyMonstro IIWarThe WretchedMom
DLC Indicator.png Brownie
Afterbirth† Indicator.png Sisters Vis
Chapter 4 BlastocystThe BloatConquestDaddy Long LegsDeathIt LivesLokiiMama GurdyMom's HeartMr. FredScolexTeratomaTriachnid
DLC Indicator.png Blue Womb DLC Indicator.png Hush
Chapter 5 The FallenIsaacSatan
Chapter 6 ???The LambMega Satan
DLC Indicator.png Greed Mode DLC Indicator.png Ultra Greed
Afterbirth† Indicator.png Ultra Greedier
Afterbirth† Indicator.png The Void Afterbirth† Indicator.png Delirium
Chapters 1-4 The FallenThe Headless Horseman

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